// Copyright 2019 The Dawn Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#ifndef SRC_DAWN_NATIVE_RENDERENCODERBASE_H_
#define SRC_DAWN_NATIVE_RENDERENCODERBASE_H_

#include "dawn/native/AttachmentState.h"
#include "dawn/native/CommandBufferStateTracker.h"
#include "dawn/native/Error.h"
#include "dawn/native/IndirectDrawMetadata.h"
#include "dawn/native/PassResourceUsageTracker.h"
#include "dawn/native/ProgrammableEncoder.h"

namespace dawn::native {

class RenderEncoderBase : public ProgrammableEncoder {
  public:
    RenderEncoderBase(DeviceBase* device,
                      const char* label,
                      EncodingContext* encodingContext,
                      Ref<AttachmentState> attachmentState,
                      bool depthReadOnly,
                      bool stencilReadOnly);

    void APIDraw(uint32_t vertexCount,
                 uint32_t instanceCount = 1,
                 uint32_t firstVertex = 0,
                 uint32_t firstInstance = 0);
    void APIDrawIndexed(uint32_t vertexCount,
                        uint32_t instanceCount,
                        uint32_t firstIndex,
                        int32_t baseVertex,
                        uint32_t firstInstance);

    void APIDrawIndirect(BufferBase* indirectBuffer, uint64_t indirectOffset);
    void APIDrawIndexedIndirect(BufferBase* indirectBuffer, uint64_t indirectOffset);

    void APISetPipeline(RenderPipelineBase* pipeline);

    void APISetVertexBuffer(uint32_t slot, BufferBase* buffer, uint64_t offset, uint64_t size);
    void APISetIndexBuffer(BufferBase* buffer,
                           wgpu::IndexFormat format,
                           uint64_t offset,
                           uint64_t size);

    void APISetBindGroup(uint32_t groupIndex,
                         BindGroupBase* group,
                         uint32_t dynamicOffsetCount = 0,
                         const uint32_t* dynamicOffsets = nullptr);

    const AttachmentState* GetAttachmentState() const;
    bool IsDepthReadOnly() const;
    bool IsStencilReadOnly() const;
    uint64_t GetDrawCount() const;
    Ref<AttachmentState> AcquireAttachmentState();

  protected:
    // Construct an "error" render encoder base.
    RenderEncoderBase(DeviceBase* device,
                      EncodingContext* encodingContext,
                      ErrorTag errorTag,
                      const char* label);

    void DestroyImpl() override;

    CommandBufferStateTracker mCommandBufferState;
    RenderPassResourceUsageTracker mUsageTracker;
    IndirectDrawMetadata mIndirectDrawMetadata;

    uint64_t mDrawCount = 0;

  private:
    Ref<AttachmentState> mAttachmentState;
    const bool mDisableBaseVertex;
    const bool mDisableBaseInstance;
    bool mDepthReadOnly = false;
    bool mStencilReadOnly = false;
};

}  // namespace dawn::native

#endif  // SRC_DAWN_NATIVE_RENDERENCODERBASE_H_
